X-over (crossover) simplified

X-over is a common shorthand notation for crossover. Appears in speaker specs, receiver menus, and DSP software UIs where screen space is limited.

Common X-over contexts

• Speaker X-over frequency – the crossover point between woofer and tweeter in a speaker’s internal filter
• Sub X-over – the point at which frequencies split between main speakers and subwoofer
• X-over slope – how sharply the filter attenuates outside the passband (measured in dB/octave: -6, -12, -18, -24, -48)

Where you’ll see the shorthand

• AVR bass management menus (“Sub X-over: 80 Hz”)
• Speaker specifications (“2-way, 2.5 kHz X-over”)
• DSP software (Roon, Dirac Live, WiiM bass management)

See detailed entries: Crossover (speaker), Subwoofer crossover, Low-pass filter.